(Cat? OR feline) AND NOT dog?
Cat? W/5 behavior
(Cat? OR feline) AND traits
Cat AND charact*

This guide provides a more detailed description of the syntax that is supported along with examples.

This search box also supports the look-up of an IP.com Digital Signature (also referred to as Fingerprint); enter the 72-, 48-, or 32-character code to retrieve details of the associated file or submission.

Concept Search - What can I type?

For a concept search, you can enter phrases, sentences, or full paragraphs in English. For example, copy and paste the abstract of a patent application or paragraphs from an article.

Concept search eliminates the need for complex Boolean syntax to inform retrieval. Our Semantic Gist engine uses advanced cognitive semantic analysis to extract the meaning of data. This reduces the chances of missing valuable information, that may result from traditional keyword searching.

Manual Pullback Recommendation

Publishing Venue

The IP.com Prior Art Database

Related People

Gerald Cabrera: AUTHOR

Abstract

Information about the location of a catheter tip within the body is valuable for preforming Intra-Vascular UltraSound imaging (IVUS), as is true for a pressure guide wire relaying relevant physiologic information about the vessel. A medical ultrasonic imaging/pressure or flow measurement device utilizes a catheter/guidewire that is insertable into a patient and an ultrasonic transducer array is located at or near its distal end. Radiopaque markers or a position sensor is used to track the position of the catheter/guidewire. Upon pullback of the catheter/guidewire, the positional information is utilized to produce an image representation (e.g. 2D or 3D representation) or physiologic representation of the inside of the artery.

Country

United States

Language

English (United States)

This text was extracted from a Microsoft Word document.

This is the abbreviated version, containing approximately
52% of the total text.

Manual
Pullback Recommendation

September 2014

Volcano Corporation, San Diego, CA

Introduction

Information about the
location of a catheter tip within the body is valuable for preforming
Intra-Vascular UltraSound imaging (IVUS), as is true for a pressure guide wire
relaying relevant physiologic information about the vessel. A medical
ultrasonic imaging/pressure or flow measurement device utilizes a
catheter/guidewire that is insertable into a patient and an ultrasonic
transducer array is located at or near its distal end. Radiopaque markers or a
position sensor is used to track the position of the catheter/guidewire. Upon
pullback of the catheter/guidewire, the positional information is utilized to
produce an image representation (e.g. 2D or 3D representation) or physiologic
representation of the inside of the artery.

A catheter/guidewire system
and method includes generating accurate two-dimensional and/or
three-dimensional reconstruction of a body vessel. The method may employ X-ray
in combination with intravascular ultrasound (IVUS). The IVUS information
represents a tubular stack of cross-sections and a 3-D path of the catheter
axis may be reconstructed from two X-ray images, after which the auto-generated
border contours on the stack of IVUS images is wrapped around this 3-D catheter
centerline. This requires measuring the position of the tip of a
catheter/guidewire which includes continuously monitoring the distance the
catheter/guidewire has travelled past a reference point, monitoring the
orientation of the tip, and reconstructing the trajectory of the tip.

The pullback of the
catheter/guidewire may be performed manually or automatically. Radiopaque
markers or some other means of communicating location, such as a position
sensor, aid to provide positional feedback during pullback. In the case of a
manual pullback, radiopaque markers are used. A calibrated distance between
markers serves as a means to provide positional feedback such that the X-ray
image can be used to reconstruct an image of the pullback path taken in the
artery. Manual pullback with a positon sensor allows positional information of
the catheter/guide-wire to be recorded, and the display of the “distance
traveled” may be displayed on a screen. Thus, a more accurate reconstruction of
2D or 3D image and a real-time display of the longitudinal cross-sections of
the vessel may be achieved. The distance travelled may be indicated on the
display. The marker or position sensor performs a...